Toy telephone system.



J. S. NEWMAN.

TOYJELEPHONE SYSTEM. APPLICATION FILED NOV- H; 1915.

Emma Sept. 11. 1917,

w pm TIN S'USEPH S. NEWMAN, F CLEVELAND, GHIO, ASSIGNOR TO THE ELECTEDSET GOM- PANY, OF CLEVELAND, DHIO, A CORPORATION OF onto,

TOY TELEPHONE SYSTEM.

Specification of Letters Patent.

Patented dept. llf, ilfiil't,

' Systems, of which the following is a full,

clear, and exact description, reference being had to the accompanyingdrawings.

' phone circuit that is peculiarly adapted to This invention has to dowith toy telephone systems, and relates particularly to a connectionblockwhereby the electric circuit of a toy telephone system may bequickly and correctly made by inexperienced persons, and without theneed of any further explanation than that appearing on the connectionblock in the form of a single word applied to each pair of binding posts[and designating the instrument or element of the system whose terminalsare to be attached thereto.

In my copending application Serial No. 45,628, filed August 16, 1915,there is shown a toy telephone set wherewith my present invention isespecially suitable for use, for it is the purpose of my severalinventions to so cheapen a telephone outfit that the same may be sold asa toy, and to simplify it to such an extent that a child who can readthe inscriptions on the connection block will experience no dificulty inproperly arranging the circuits.

By reason of the particular arrangement of connections embodied in theblock, a very simple telephone circuit is made possible wherein only twoline wires are required instead of the usual three, the extra wireordinarily forming one side of the bell circuit.

Therefore, among the objects of my invention is the provision of asimplified teletoy telephone systems.

A furtherobject of the invention is the provision of an instrument,herein referred to as a connection block, that is constructed preferablyof wood so as to avoid the need of insulating material and consequentlyresulting in a very cheap production of the instrument, and by the useof which instru ment the above ends are eflicaclously attained in asimple and expeditious manner.

Other objects will become apparent as I proceed to describe, in detail,the circuit and connection block embodying my invention and illustratedin the accompanying drawing which forms a part hereof, and whereinFigure l is a perspective view of the connection block; Fig. 2 is abottom plan there of; and Fig. 3 is a diagram oi. a toy circuitincluding two of my connection blocks and arranged in accordance with myinvention.

The body portion 1 of the connection block is preferably formed of arectangular block of wood having its underneath surface recessed fromend to end as shown at 2, leaving a pair of ribs 3 extending along eachside of the block. The particular design of the block is of considerableimportance, for it allows the material from which the blocks are made tobe formed up in long strips by simply grooving the strip on one side togive it the channel formation, and then sawing the strip into blocks ofthe required length.

The binding posts 5 are preferably formed of ordinary brass brads thatare driven through the block until their points project a slightdistance into the recess 2. Two pairs of binding posts are arranged atone end of the block, the one being designated Trans, meaning that theyare for attachment to the transmitting instrument of the telephone set,and the other pair is marked Bat, and is adapted to have connection withthe terminals of the battery. On the left hand side of the block, aboutmidway of its length, there is located a pair of binding posts markedRec, arranged to have connected to them the terminals of the receiver,and directly opposite the receiver binding posts is a pair of postsmarked Bell to which the terminals of an electric hell are attached. Onthe same side of the block, and located at the end remote from thebattery binding posts, is a pair of posts marked Line. To each of theseis connected one of the line wires. A switch blade 6 of thin springbrass is pivoted upon a brad 7 that extends through the block and intothe chanof Fig. 2, it will be seen that a wire 10 con 'ncts one of the"transmitter binding posts to one of the pair designated .Rec, while theother post of the transmitter pair'- is connected, by the wire to one ofthebattery binding posts and to the co11tactpo111t it." The other Batbindin post has connection with one of the Bell posts, and with a""Line,post, through the wire 1-2, the opposite, Line post having connectionwith the switchblade 6, through the [wire 13 audbi'ad 7.ThecontachpoiiityTa has connection throughthe wire 1%, w ith the reandthereinaining Ben post is connected, jhr-oagh the 'wire 15,, with thecontact 'point :Lf For the-sake of durabilityand cheap- :ness I prefertosolder the aforesaid wires 10 -to 15 to thefrespective binding posts;and ,these connections are effectuallyprotected "because they arecontained within the ac- *ces 2, t

n1juiejdngmm or Fig. 3 I have shown, c'onyeiitionally, the elements of atwo-station Itoy'teIe1'Jhone SySteinpi'operIy connected by theiis eo finy connecting blocks; the transnii'ttin g instrument 20, receii er 21,battery 22, and'bell'23 of each station hayingeach its terminals connected to the aiii'propriate "pair ofgb ind'i ng posts of its respectiveconncctionblockl; The connection o ttthe termii ials with the bindingostsma be-co'nifeniently made by twisting the terminals "about theposts. The Line binding posts oftheblocks of bothstations are connectedthrough the line wires 24 and25.

When notin use, the switch blades car the two stations A andBi'estuponthe contact I ,points marked L which "indicates *line.

For the purpose of describing the operation ofythe instrument andcircuits, let-Lit be ,assumed that stationA desires to call B. Theoperator turns the switchblade "into "engagement with. the contact pointR, which indicates ring, and "a circuitisjes lta blished from thebatteiy22 of the A station through the wire 11, contact point B,

sx'vitch blade 6, brad 7, wire 13, line wire25,

lgwii'e l2 of the connection block of station B,ythrough"the bell 28 ofsaid -station, back the switchthereof and through'theother.

line wire 24-, thewire 12 of the connection block-0t station 'Afto theopposite side of the b attery 22. The operator at station 13,rcspondingito the call, throws the switch of his connection block tothe contact point marked T, which represents the talking "circuit, theoperatorat station A doing likewise: This-breaks the bellcircuit andestablishes a circuit from battery 22 of station A, through wire -11,the transmitting,rinstrument, wire rl'0,gthe receiye i; 21, wire 14;,contact point T, switch blade 6, wire 13, line wire 25, 'through thecorresponding circuit of the connection block of station B, includingthereceiver, transmitter, and batter-"yet that station, andreturningthrough the line wire 2- and wire 12 of the first connection block, tothe battery 220i? station A.

.From the foreging"description it will be scenthat a very simpiettiephtne circuit is fin'acl'e .ipcssibie 15 time, (if m blocl'c and"itwillalso be appi-ecia ted', f am the essential details of t'heconncion 1 block, that the'saine may be produced 'at "eyelo'iv'cost. i 1 lHaving thus described my invention, what I"'claSim V p 11. A device "orthe kind assented, comprising a block havin means 'for connectingthe'elements 'c'r;a telephone Seestia'eennections being indicated, saidblockal'so having line wire connections whereby two sets "ma be electricallyestimated, *co-iitats located in the signal, talking *and batterytomeeeons, and "a switch connected 7 with the li'ii'efaiid adapted to(engage the of saint contacts,- whereby the clrcint through the line maybe made to lnclude thelsignal con iections, or the battery connections,or the battery connections. t .2. As a new artlcle of inhuifacture, ablock hayingccniiectingQmeans rot .thebatteryl, the l talking-and the sgnal elements of a-tele- "phone set}; connectlons between said meanswhereby the elements arelplip'ed :in gmp r relationycontac'ts within sad connections,

I one for the battery, one for"the signal, and

, one *ccmmo to both the battery andjtalking elements a switch "forgengageinent with any one oi-said contacts; the block hafklng also llnowire connectlng means connections between one otlthe line wireconnecting means V having connecting ineanstfor; the battery,

the talking, and the signal elements of a telephone set; connectionsbetween said m ans whereby the elements are [placed in "proper relation;contacts "within said connections, one for the battery, onefor thesignal, ,and one common to both thelbattery and talking elements; aswitch for engageinent ,with'anyone of said cciitacts;

means whereby the "blocks may beelectrically connected; connectionsbetween one of each block having also line wirep'onnectingthe line Wireconnecting means of each block to send a signal to the telephone set ofthe and its respective switch; and connections other block, and then toengage its talking between the other line Wire connecting contact toestablish a talking circuit between 10 means of said block and all ofthe connectthe telephone sets.

5 ing means of the elements of its respective In testimony whereof Ihereunto afilx my telephone set; the switch of each block besignature.ing adapted to engage its signal contact and JOSEPH S. NEWMAN.

copies oi this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

